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Is Puppy Diarrhea and Vomiting Normal After Vaccination?


Dear VetBabble: Is My Puppy’s Diarrhea and Vomiting After Vaccination Normal?

Hello, I have a 7-week-old puppy who has had his first lot of vaccinations today. But since having this, he now has diarrhea and has started vomiting. It may be a reaction to the vaccine, but it might just be a coincidence. If it is continuing, should I have him examined by my vet to determine the cause? Would he need fluids to prevent dehydration, and can my vet give medications to control the vomiting and diarrhea?

Understanding Your Puppy’s Reaction To Vaccinations

Firstly, congratulations on the new addition to your family! It’s normal for pet owners to be concerned about their furry friends, especially when they’re so young and experiencing new situations like vaccinations. It is possible that your puppy is having a mild reaction to the vaccine, which can manifest as diarrhea and vomiting. In most cases, these reactions resolve on their own within 24 to 48 hours. However, there are also other potential reasons for your puppy’s symptoms, such as an underlying gastrointestinal issue or infection. To help understand the cause of your puppy’s condition, please take a look at our helpful article, Why Does My Dog Have Diarrhea?.

When You Should Worry About Your Puppy’s Diarrhea and Vomiting

Although mild diarrhea and vomiting may occur after a vaccination, there are instances when it’s essential for a pet owner to be more concerned. These include:

  • If your puppy continues to vomit and have diarrhea for more than 48 hours after vaccination
  • Signs of dehydration, such as sunken eyes, dry gums, skin tenting, and lethargy
  • Blood in the diarrhea or vomit
  • A significant decrease in the puppy’s energy levels and appetite

In these cases, it’s crucial to have your puppy examined by a veterinarian, as they may need additional treatments to address the issue. Our article, Diarrhea in Dogs: When to Worry, offers more in-depth information on when to seek medical attention for your pet.

Possible Causes and Treatments for Diarrhea and Vomiting in Puppies

If your puppy’s symptoms persist or if your veterinarian determines that the vaccination is not the cause, there could be other reasons for the diarrhea and vomiting. One common issue in puppies is a parasitic infection called coccidiosis. Our article, Coccidia in Dogs and Puppies: What It Is and How to Treat It, provides more information on this condition and its treatment options. Additionally, puppies may experience gastrointestinal upset due to dietary indiscretions, stress, or other infections.

If your vet determines that your puppy is dehydrated, they may recommend administering fluids subcutaneously (under the skin) or intravenously. They could also prescribe medications to help control the vomiting and diarrhea, allowing your puppy’s gastrointestinal tract to recover. Our article, Vomiting in Dogs: Causes, Treatment & When to Worry, offers further insight into the causes and treatments available for vomiting in dogs.

In conclusion, it’s essential to closely monitor your puppy after their vaccinations and to be aware of any potential adverse reactions. If you’re concerned about your pet’s symptoms, do not hesitate to consult with your veterinarian, as they can provide the appropriate guidance and care to ensure your puppy remains happy and healthy.

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